An educational psychologist investigated the impact of a newly introduced county-wide school ban on smartphones on student anxiety levels. The psychologist compared anxiety scores from pupils in the county with the ban to pupils in a neighbouring county where no such ban was introduced.
Explain one strength and one weakness of using a natural experiment for this research.
Practise Edexcel A Level Psychology Methods with exam-style questions for A Level Psychology. 638 questions, matched to the Edexcel A Level Psychology (9PS0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.